Finding the Fourth Proportional to 340.74, 511.08 and 145.68
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Solution
The fourth proportional to 340.74, 511.08 and 145.68 is: 218.51
Step by Step Solution
- Step 1: Write the proportion equation
340.74 : 511.08 = 145.68 : x - Step 2: Convert to fraction form
340.74/511.08 = 145.68/x - Step 3: Cross multiply
340.74x = 511.08 × 145.68 - Step 4: Simplify right side
340.74x = 74,454.13 - Step 5: Solve for x
x = 74,454.13/340.74 - Step 6: Final answer
x = 218.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.